90Mbps with 32ns propagation delay — what it buys the bus
The ADUM3301CRWZ-RL is a 3-channel digital isolator from the iCoupler series, using magnetic coupling to transfer signals across a galvanic isolation barrier. With a 90Mbps data rate and 32ns max propagation delay in either direction, it keeps up with SPI buses running at 10MHz+ and parallel interfaces that need tight timing. The 2.5ns typical rise/fall time and 2ns max pulse-width distortion mean the output waveform preserves the input pulse shape well enough that you can drive a UART or CAN transceiver without re-clocking the data. The 2500Vrms isolation rating covers reinforced insulation requirements for industrial equipment with mains-referenced circuits. Common-mode transient immunity of 25kV/µs minimum means the part holds its state when a motor drive or inverter switches at several kV/µs across the barrier — a spec that separates iCoupler parts from cheaper optocoupler alternatives that glitch under fast transients.
Channel assignment and supply flexibility
Three unidirectional channels with a 2/1 split (two inputs on side 1, one input on side 2) cover the common case of an MCU talking to an isolated peripheral with a single feedback or status line. The 3V to 5.5V supply range on each side lets you run the controller side at 3.3V and the isolated side at 5V without a level shifter — handy when the isolated circuit needs 5V for a relay driver or analog front-end.
Package and thermal handling
Housed in a 16-SOIC wide-body (7.50mm width) package, the same footprint used across the ADUM3301 family. The wide-body gives better creepage distance than the narrow SOIC-16 — relevant when you need 8mm+ clearance for 250Vrms working voltage in pollution degree 2 environments. Surface-mount only; no through-hole option in this variant.
Listed as an active product with ROHS3 compliance.